/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jcode.netty.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Base class for background thread
 *
 * @author shijia.wxr
 */
public abstract class ServiceThread implements Runnable {
	private static final Logger stlog = LoggerFactory.getLogger(ServiceThread.class);
	protected final Thread thread;
	private static final long JoinTime = 90 * 1000;
	protected volatile boolean hasNotified = false;
	protected volatile boolean stoped = false;

	public ServiceThread() {
		this.thread = new Thread(this, this.getServiceName());
	}

	public abstract String getServiceName();

	public void start() {
		this.thread.start();
	}

	public void shutdown() {
		this.shutdown(false);
	}

	public void stop() {
		this.stop(false);
	}

	public void makeStop() {
		this.stoped = true;
		stlog.info("makestop thread " + this.getServiceName());
	}

	public void stop(final boolean interrupt) {
		this.stoped = true;
		stlog.info("stop thread " + this.getServiceName() + " interrupt " + interrupt);
		synchronized (this) {
			if (!this.hasNotified) {
				this.hasNotified = true;
				this.notify();
			}
		}

		if (interrupt) {
			this.thread.interrupt();
		}
	}

	public void shutdown(final boolean interrupt) {
		this.stoped = true;
		stlog.info("shutdown thread " + this.getServiceName() + " interrupt " + interrupt);
		synchronized (this) {
			if (!this.hasNotified) {
				this.hasNotified = true;
				this.notify();
			}
		}

		try {
			if (interrupt) {
				this.thread.interrupt();
			}

			long beginTime = System.currentTimeMillis();
			this.thread.join(this.getJointime());
			long eclipseTime = System.currentTimeMillis() - beginTime;
			stlog.info("join thread " + this.getServiceName() + " eclipse time(ms) " + eclipseTime + " " + this.getJointime());
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}

	public void wakeup() {
		synchronized (this) {
			if (!this.hasNotified) {
				this.hasNotified = true;
				this.notify();
			}
		}
	}

	protected void waitForRunning(long interval) {
		synchronized (this) {
			if (this.hasNotified) {
				this.hasNotified = false;
				this.onWaitEnd();
				return;
			}

			try {
				this.wait(interval);
			} catch (InterruptedException e) {
				e.printStackTrace();
			} finally {
				this.hasNotified = false;
				this.onWaitEnd();
			}
		}
	}

	protected void onWaitEnd() {
	}

	public boolean isStoped() {
		return stoped;
	}

	public long getJointime() {
		return JoinTime;
	}
}
